Slavery in "AMERICA" 
It must be noted that "America" is both a contenant name and a countries name. Slavery in America as a contenant began in south America with the Incas and Peruvians 100s of years before the Europeans arrived in 1532 and continues today in the owership of one man by another. Slavery is not a sin of the whiteman in South America.
   
Slavery in Central America as a contenant began with the Mayans over 700 of years before the Europeans arrived in 1492 with the capture, enslavement, sacrifice, and canabalizm by the Myans of all their enemies. Slavery is not a sin of the whiteman in Central America.
   
Slavery in North America as a contenant began with the Wampanoag tribes that spaned from New York Manhatten Island to Cap Cod Massachusetts with more than 30,000 tribe warriers. For over 300 years before the Europeans arrived in 1609 and the first colony established the Wampanoag tribes captured, and enslaved all their enemies. Slavery is not a sin of the whiteman in North America.
It must be also noted that at the time of the first colonies being settled in the North America contenant, that will one day be named the United States of America; there was not a single country upon the earth that did not have slavery, sell slaves, or actively participate in slavery, or think slavery was wrong, wicked, or evil.
By 1607 and the first British colony slavery in Britain since the Roman invasions of 55BC
By 1620 when Holland and Britain jointly established their first colony slavery had been since their inception during the 80 year war for independence from Spain in 1568
It must also be noted that none of the Colonies were the USA, they were a colony not a independent state
1607   Virginia - a British colony is established (Slavery is legal as the law of Britain)
 
 
1620   Massachusetts - a Dutch & British colony is established (Slavery is legal as the law of the Dutch and Britain)
 
 
1626   New York - a Dutch colony is established (Slavery is legal as the law of the Dutch)
 
 
1633   Maryland - a British colony is established (Slavery is legal as the law of Britain)
 
 
1636   Rhode Island - a British colony is established (Slavery is legal as the law of Britain)
 
   
  Connecticut - a British colony is established (Slavery is legal as the law of Britain)
 
 
 
 
1638   New Hampshire - a British colony is established (Slavery is legal as the law of Britain)
 
   
  Delaware - a British colony is established (Slavery is legal as the law of Britain)
 
 
 
 
1653   North Carolina - a British colony is established (Slavery is legal as the law of Britain)
 
 
 
1663   South Carolina - a British colony is established (Slavery is legal as the law of Britain)
 
 
 
1664   New Jersey - a British colony is established (Slavery is legal as the law of Britain)
 
 
 
1682   Pennsylvania - a British colony is established (Slavery is legal as the law of Britain)
 
 
 
1732   Georgia - a British colony is established (Slavery is legal as the law of Britain)
 
 
July 4th 1776   13 Colonies declare their independence from Britain and establish themselves as independent Country States
 
 
 
1780   Pennsylvania as a seperate country state declared slavery illegal
   
  Massachusetts as a seperate country state declared slavery illegal
 
 
 
1783   New Hampshire as a seperate country state declared slavery illegal
 
 
1784   Connecticut as a seperate country state declared slavery illegal
   
  Rhode Island as a seperate country state declared slavery illegal
 
 
 
December 7th 1787   13 Independent Country States agree upon a Constitution and retify it, joining into a United Republic, with limited rights lost. All authorities not mentioned in the Constitution remain in the power of the individual states. 
 
 
 
 
   
  Prior to this date the 13 states were individual colonies and then individual countries following the July 4th 1776 declaration of independence. At the inception of the USA, slavery was regulated to the powers of the state, as this was not a power stated in the agreed upon constitution.
 
 
 
 
 
 
 
 
1791   Vermont enters into the USA, having been an independent free republic, and having abolished slavery in 1771
 
 
 
1792   Kentucky territory, seperated from Virginia State and enters into the USA - slavery permitted by state law
 
 
 
1796   Tennessee territory, seperated from North Carolina State and enters into the USA - slavery permitted by state law
 
 
 
1799   New York declares slavery illegal
 
 
1803   Ohio freed British colony joins USA as a state, abolishing slavery in 1802 before entering USA
 
 
 
1804   New Jersey declares salvery illegal
 
 
1807   Led by President Thomas Jefferson in 1807 Congress outlawed the importation of slaves into the USA, and the heritage of slaves – born of a slave does not make one a slave – with the in intention that slavery would die out naturally in one generation. It was unanimously agreed upon by all states of the union that the US Constitution did not give power to the Federal government to outlaw slavery, and it must remain a states right issue. However some states continued to sell slaves, and ignored the heart of the law as the economic and social ramifications of slavery ending was too great to face.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1812   Seperated from the territory of France, and the Louisianna Purchase, the State of Louisianna is established - slavery allowed as in the laws of France
 
 
 
 
1817   Seperated from the State of South Carolina and Georgia, the State of Mississippi is established - slavery allowed as in the states of South Carolina and Georgia
 
 
 
 
 
1818   Illinois a freed French colony, enters into the USA, and abolishes slavery
 
 
1819   Alabama a freed Spanish colony, enters into the USA, and allows slavery as in Spanish law
 
 
 
1820   Seperated from the State of Massachusetts, Maine enters into the USA, with slavery illegal
 
 
 
1821   Seperated from the territory of the Louisianna Purchase, the State of Missouri is established - slavery allowed as in the laws of France
 
 
 
 
1836   Seperated from the territory of the Louisianna Purchase, the State of Arkansas is established - slavery allowed as in the laws of France
 
 
 
 
1837   Michigan a freed French colony, enters into the USA, and abolishes slavery
 
 
1845   Florida a freed British colony enters into the USA - allows slavery as the law in Britain allows
 
   
  Texas a sovereign republic enters the USA, allowing slavery as the law of Mexico and Spain
 
 
 
 
1846   Seperated from the territory of the Louisianna Purchase, the State of Iowa is established - slavery made illegal before becoming a state
 
 
 
 
1848   Wisconsin a freed British colony enters into the USA - makes slavery illegal before entered the country
 
 
 
1850   California a sovereign republic enters the USA, allowing slavery as the law of Mexico and Spain
 
 
 
1858   Seperated from the territory of the Louisianna Purchase, the State of Minnesota is established - slavery made illegal before becoming a state
 
 
 
 
1859   Oregon a freed British colony enters into the USA - makes slavery illegal before entered the country
 
 
 
November 1860   Abraham Lincoln wins the election of the President of the USA, running on the newly formed republican party ticket, with the support to end slavery in the USA as begun by Join Congress and President Thomas Jefferson in 1807
 
 
 
 
   
  Following the election results, 7 states seced from the union in defense of slavery in their states, unwilling to abolish slavery by Federal law = Alabama, Florida, Georgia, Louisiana, Mississippi, South Carolina, and Texas
 
 
 
 
 
 
 
April 12th 1861   After days of sniper shots, the Federal army / navy retaliates and fires upon Fort Sumter South Carolina. The 7 states of the South declare war on the Federal government of the North and are joined by 4 additional states = Arkansas, North Carolina, Tennessee, and Virginia. Civil war is declared
 
 
 
 
 
 
   
  West Virginia seperates itself from Virginia and declares itself a slave free, northern state of the USA, will be recognized at the end of the war in 1863
 
 
 
 
 
January 1st 1863   President Abraham Lincoln signs into law the Emancipation Proclamation declaring all slaves free in all states in the union and since the Southern states never completed the formal process to seced, they are still part of the USA and this makes all slaves free in the south.
 
 
 
 
 
 
 
April 9th 1865   The southern army surrenders to the north and the Civil war ends
 
 
December 1865   The 13th ammendment is ratified by all states of the union, to formally end slavery in the USA and give the freed slaves the right to vote
Slavery in "America" as a country, as in the USA has suffered slavery from December 7th 1787 [Retification of the Constitution] until 1863 = just under 76 years
"America" as a country had the heart, and conviction to end slavery through federal law, and allow it to die off in one generation since 1807 = less than 20 years after its origin. No other country has had less slavery in its history than the USA